Evaluation and Comparison of Shear Bond Strength of Glass Ionomer, Resin modified Glass Ionomer and Composite Resin in Primary Molars: An Invitro study

Sonu, Bose (2007) Evaluation and Comparison of Shear Bond Strength of Glass Ionomer, Resin modified Glass Ionomer and Composite Resin in Primary Molars: An Invitro study. Masters thesis, Saveetha Dental College and Hospitals, Chennai.

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Abstract

The purpose of this study was to determine and compare the shear bond strength of a conventional glass-ionomer cement (Fuji IX), a resin modified glass ionomer cement (Fuji II LC) and a composite resin (Filtek Z-250). Dentin of the buccal surfaces from ninety extracted human primary molars were prepared for shear bond strength testing. The specimens were randomly divided into 3 groups of 30 each. Dentinal surfaces were treated according to the instructions of manufacturers for each material. Each restorative material was placed inside a plastic matrix 2mm high with an internal diameter of 3mm, which was placed perpendicular to dentin surfaces. Shear bond strength was tested using an Universal Testing Machine at crosshead speed of 0.5mm/minute in a compression mode. Fuji IX showed the lowest mean shear bond strength (3.19 ± 0.73)MPa and the composite resin, Filtek Z-250 showed the highest mean shear bond strength (15.94 ± 1.7)MPa , while the mean shear bond strength of Fuji II LC was (8.53 ± 0.78)MPa which was greater than Fuji IX but less than Z-250. ANOVA revealed statistically significant differences in the mean shear bond strength of all groups (p<0.05). so it was concluded that composite restorative materials show higher shear bond strength than conventional and resin-modified glass ionomer restorative material in primary molars, but shear bond strength of resin- modified glass ionomer is higher than that of the conventional glass ionomer cement.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Shear Bond Strength, Glass Ionomer, Resin modified, Composite Resin, Primary Molars.
Subjects: DENTAL > Paedodontics and Preventive Dentistry
Depositing User: Kambaraman B
Date Deposited: 23 Jan 2018 08:23
Last Modified: 23 Jan 2018 08:23
URI: http://repository-tnmgrmu.ac.in/id/eprint/5519

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